// 鼠标特效，心
    window.onclick = function(event) {
        var heart = document.createElement("b");
        heart.onselectstart = new Function('event.returnValue=false');
        document.body.appendChild(heart).innerHTML = "❤";
        heart.style.cssText = "position: fixed;left:-100%;";
        var f = 16, // 字体大小
            x = event.clientX - f / 2, // 横坐标
            y = event.clientY - f, // 纵坐标
            c = randomColor(), // 随机颜色
            a = 1, // 透明度
            s = 1.2; // 放大缩小
        var timer = setInterval(function() {
            if (a <= 0) {
                document.body.removeChild(heart);
                clearInterval(timer);
            } else {
                heart.style.cssText = "font-size:16px;cursor: default;position: fixed;color:" + c + ";left:" + x + "px;top:" + y + "px;opacity:" + a + ";transform:scale(" + s + ");";
                y--;
                a -= 0.016;
                s += 0.002;
            }
        }, 12)
    }
    // 随机颜色
    function randomColor() {
        return "rgb(" + (~~(Math.random() * 255)) + "," + (~~(Math.random() * 255)) + "," + (~~(Math.random() * 255)) + ")";
    }